Ask HN: Other than writing code, how do YOU maximize your output?

Presumably your day job is writing code.

Other than writing code, what practices, routines, systems, or otherwise... do YOU use to maximize your output (ship more code)? These could be wholly unrelated to software, or maybe not.

Strict morning routine?

Fulfilling hobby?

Coffee habit?

Diet?

Sleep?

Medication?

Music?

Pomodoro?

TDD?

Read software blogs?

Study/Memorize APIs?

What works for YOU on a day-to-day basis to help you get into a highly productive flow?